[Bug 769514] [NEW] Mail not sent unless relayhost has a port number

[Andrew Phillips]

Public bug reported:

Binary package hint: postfix

A recent release of postfix seems to have a bug where if you don't have a port number on relayhost in /etc/postfix/main.cf, it logs:
Apr 17 05:47:26 complete postfix/smtp[9666]: fatal: unknown service: smtp/tcp

Further, mail is never sent.  Everything seems to work when I change main.cf from:
relayhost = smtp.xxx

to:
relayhost = smtp.xxx:25

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: postfix 2.8.2-1ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Sat Apr 23 11:21:10 2011
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, user)
 LANG=en_CA.UTF-8
SourcePackage: postfix
UpgradeStatus: Upgraded to natty on 2011-01-08 (104 days ago)

** Affects: postfix (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug natty

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https://bugs.launchpad.net/bugs/769514

Title:
  Mail not sent unless relayhost has a port number